Added pkgadd distribution for Solaris.

Added a cleaner way to install demo source so that installed versions use a
simplified makedefs/makerules.

Small fix to get osgText to compile with Solaris CC.  Constructor declared
with a non-const argument, but implemented with const argument.

src/osgText/FTVectoriser.cpp

@@ -27,7 +27,7 @@ void FTContour::AddPoint( const float x, const float y)
 }
 
 
-FTVectoriser::FTVectoriser( const FT_Glyph glyph)
+FTVectoriser::FTVectoriser( FT_Glyph glyph)
 :    contour(0),
     contourFlag(0),
     kBSTEPSIZE( 0.2)